6th Slow Extraction Workshop (SX 2025)

Contribution List

28. Status of the SX commissioning for the Mu2e experiment

Vladimir Nagaslaev (Fermilab)

06/10/2025, 09:30

29. HEARTS@LEIR for R2E testing at CERN

Cristopher Cortes (CERN)

06/10/2025, 10:30

30. Slow extraction of mixed ion beams

David Ondreka (GSI Helmholtzzentrum für Schwerionenforschung), Elisabeth Renner (TU Wien)

06/10/2025, 11:00

31. Less ripple - higher intensity: What is the "ideal" intensity in SX for raster-scanning at HIT?

Christian Schömers (HIT)

06/10/2025, 11:30

34. Slow extraction simulations with SciBmad

Eiad Hamwi (Cornell University)

06/10/2025, 13:00

33. Simulating the space radiation environment with accelerators

Kevin Brown (C-AD)

06/10/2025, 13:30

35. Stable islands and bent crystals for slow extraction

Massimo Giovannozzi (CERN)

06/10/2025, 14:00

36. Octupole assited slow extraction from SPS to the North Area at CERN

Aleksandr Gorn (CERN)

06/10/2025, 15:30

37. Crystals and beam diffusers for higher extraction efficiency at J-PARC

Ryotaro Muto (KEK)

06/10/2025, 16:00

38. Development of SX schemes for SIS100 in the presence of higher-order field errors

David Ondreka (GSI Helmholtzzentrum für Schwerionenforschung)

06/10/2025, 16:30

39. SPS Crystal shadowing advancment and operational deployment

Francesco Maria Velotti (CERN)

06/10/2025, 17:00

41. Studies on collective phenomena related to slow beam extraction

Masahito Tomizawa (J-PARC)

07/10/2025, 09:00

42. Design of a resonant slow extraction from low-emittance electron booster rings using transverse resonance island buckets

Cristopher Cortes (CERN)

07/10/2025, 09:30

40. Investigations into multi energy extraction at MedAustron

Katrin Holzfeind

07/10/2025, 11:00

MedAustron, located in Wiener Neustadt, Austria, is a synchrotron facility used for medical treatment and research. To decrease downtime and increase the efficiency of the machine, multi energy extraction (MEE) techniques are explored. An alternative extraction method to the present betatron core driven extraction is radio frequency knock out (RFKO). This method allows for extracting bunched...

57. Status of RF knock-out extraction development at MedAustron

Fabien Plassard (MedAustron)

07/10/2025, 11:30

44. Crystal production at CERN

Luigi Esposito (CERN)

07/10/2025, 13:00

46. R&D on low-Z electrostatic septa at CERN

Friedrich Lackner (CERN)

07/10/2025, 13:30

45. Realization of extreme sensitive power-supplier AC ripple measurements

Frank Stulle (Bergoz)

07/10/2025, 14:00

43. Crystal extraction studies at SPS

Yann Dutheil (BNL)

07/10/2025, 15:30

49. RF techniques for spill quality control at CERN

Pablo Arrutia (CERN)

07/10/2025, 16:00

51. Studies of bunched beam extraction with high harmonics h=90 at SIS18

Peter Forck (Beam Instrumentation and advanced operation)

08/10/2025, 09:00

50. Tailored multi-band excitation to minimize fluctuations for knock-out extraction

Philipp Niedermayer (GSI)

08/10/2025, 09:30

54. Studies on spill quality improvement at J-PARC

Ryotaro Muto (KEK)

08/10/2025, 11:00

55. Spill feedback and optimisation system for RFKO and tune scan extraction

Philipp Niedermeyer

08/10/2025, 11:30

56. Extraction bump digital twin for NSRL slow extraction

Lucy Lin (Brookhaven National Laboratory)

08/10/2025, 13:00

58. Crystal design based on multi-fidelity surrogate models

Francesco Maria Velotti (CERN)

08/10/2025, 13:30

59. Operational results with new high frequency spill monitor and prospects

Federico Roncarolo

08/10/2025, 14:00

60. Precise evaluation of time-varying quadrupole field errors in the J-PARC Main Ring

Takashi Asami (KEK)

08/10/2025, 15:30

61. Development of the bent crystals for Slow Extraction

Vincenzo Guidi (University of Ferrara)

08/10/2025, 16:00

63. Poincare-friendly tracking with tune modulation

Stephen Peggs (BNL)

08/10/2025, 16:30

67. Session 1 and 2 Summary

Christian Schömers (HIT), Eiad Hamwi (Cornell University), Francesco Maria Velotti (CERN), Kevin Brown (C-AD), Lucy Lin (Brookhaven National Laboratory), Masahito Tomizawa (J-PARC), Vladimir Nagaslaev (Fermilab), Yann Dutheil (BNL)

09/10/2025, 08:30

68. Session 3 and 4 summary

Alessio Mereghetti, David Ondreka (GSI Helmholtzzentrum für Schwerionenforschung), Elisabeth Renner (TU Wien), Kiel Hock (Brookhaven National Laboratory), Matthew Fraser (CERN), Pablo Arrutia (CERN)

09/10/2025, 09:00

69. Session 5 and 6 summary

Aakaash Narayanan (aakaashn@fnal.gov), Cristopher Cortes (CERN), Peter Forck (Beam Instrumentation and advanced operation), Ryotaro Muto (KEK)

09/10/2025, 09:30

70. SX2027_Announcement

Matthew Fraser (CERN)

09/10/2025, 10:00

52. Application of autoresonance in rapid beam extraction of synchrotrons

Xiao Ding (Institute of Modern Physics, Chinese Academy of Sciences)

48. Crystal ultra-slow extraction of positrons from the Frascati DAΦNE collider

Marco Garattini (INFN)

47. Investigation of channeling with low energy ion beams for medical applications

Marco Garattini (INFN)

53. Optimization of the slow extraction of SAPT Synchrotron

Manzhou Zhang (Shanghai APACTRON Particle Equipment Co., Ltd.)

62. OTR based single particle counting for heavy ion beams

Rupesh Ghagi (GSI & Liverpool Univ.)

66. Practical recipes for Phase Space Reconstruction and Tune Measurements using TBT BPMs

Vladimir Nagaslaev (Fermilab)

Poster

The motivation of this poster is to encourage discussion and the exchange of practical experience among workshop participants on techniques for reconstructing and visualizing key beam dynamics parameters relevant to Slow Extraction. We present the methods applied during the 2025 Slow Extraction commissioning at Fermi lab for tuning the resonant extraction phase based on the beam trajectory in...

24. Rastering vs nonlinear optics for ion irradiation applications

David Bruhwiler (RadiaSoft LLC)

Poster

Ion beam irradiation of integrated circuits is important for space and aerospace applications. It is important to irradiate specified areas of a target with a well-defined dose. The present state of the art is to transform the transverse ion beam distribution from Gaussian to a uniformly-filled shape that is large enough to fill the slit of a tungsten collimator. Uniform transverse density...

25. Simulations of an AC Quadrupole for Power-line Ripple Correction at the AGS Booster

Kiel Hock (Brookhaven National Laboratory)

Poster

The AGS Booster delivers slow-extracted beam to the NASA Space Radiation
Laboratory by exciting a third integer resonance with. To correct oscillations of the orbit from the power-line ripple, an active filter on the main magnet power supply. This corrects the ripple in the dipoles and four of five windings in the quadrupoles. To correct residual ripple on the quadrupoles, a corrector...

32. Slow extraction system and beam commissioning for compact application facilities

Shuang Ruan (Institute of Modern Physics, Chinese Academy of Sciences)

65. Spill Ripple Compensation with direct field ripple measurements

Shruti Tajne (Brookhaven National Laboratory)

Poster

Compensation AC quad has been installed in the AGS Booster at BNL to counteract measured ripples and provide smoother, more stable spills for sensitive experiments. Hardwares to provide digital control have been assembled. Signal processing and control integration is under development.

20. Test and final design of the Cryogenic Current Comparator for slow extraction

Peter Forck (Beam Instrumentation and advanced operation)

Poster

The Cryogenic Current Comparator (CCC) is a superconducting device for measurement of low intensity beams with magnetic fields in the range of fT. It uses a Superconducting Quantum Interference Device (SQUID) as an ultrasensitive magnetometer and an elaborated superconducting shield for its protection from external magnetic fields. The system is operated in a helium bath cryostat, which has to...

10. The "tunemod" lattice element for tune modulation studies

Stephen Peggs (BNL)

Poster

Tune modulation is dangerous to stability and clean operation when RF buckets and longitudinal motion are active. The "tunemod" lattice element enables the effectes of tune modulation to be evaluated, in the absence of other effects due to longitudinal motion, such as dispersion-dependent and parametric strength effects. Examples are presented.